A series of maps that will challenge you to work with your teammate to solve puzzles. I will extensively test it that you cannot solve it alone, but also will not make the puzzles so hard that its just not fun anymore. There's a challenge but nothing frust

Portal 2 Coop Chambers

Collection by Clemo7

Selection of 470 Portal 2's chambers to play with friend (± 5.3GB).
Based on the most popular levels (most played and liked) and also on the creators and levels most followed.
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"Thinking with Time Machine" is required to play some levels ("Brai

Co-op master collection (m-trex' pick)

Collection by m-trex

Collection of collections of co-op maps, simply click "Subscribe to all" to get them all.
Let me know, if I missed a collection.